4 BULLETIN" 88, U. S. DEPARTMENT OF AGRICULTURE. 



It will be noted from Table I that the amount of spray used in 

 all applications was large, and probably considerably in excess of 

 that used by the average fruit grower in the valley. The amount 

 of spray applied immediately following the falling of the petals 

 (April 24-25) exceeded somewhat the amount given in any subsequent 

 application. It will be noted also that Bordeaux nozzles were used 

 at this time, whereas in subsequent treatments the so-called eddy 

 chamber or Vermorel type of nozzle was used, producing a fine cone- 

 shaped spray. 



In Table II are shown the number and percentage of sound fruit 

 from each of five trees of each plat, as well as the total number and 

 total percentage of sound and wormy fruit for the five trees of the 

 respective plats. 



Table II. — Number of sound and wormy apples from each tree of each plat, Sherman 

 & Johnson orchard, Roswell, JS T . Mex., 1913. 



Plat and condition of fruit. 



Tree 1. 



Tree 2. 



Tree 3. 



Tree 4. 



Tree 5. 



Total 



fruit 



for 



plat. 



Total 

 per 

 cent 

 sound 

 fruit. 



Plat I. 



138 

 2,918 



141 

 2,022 



153 

 3,382 



179 

 3,418 



152 

 3,239 



706 

 14, 979 





Sound 





Total 



3,056 

 95. 48 



2,166 

 93. 35 



3,535 

 95.67 



3,597 

 95.02 



3,391 

 95.52 



15, 745 







95.13 







Plat II. 



Wormy 



86 

 4,271 



39 

 4,086 



33 

 3,378 



37 

 3,344 



70 

 5,504 



265 

 20,583 









Total 



4,357 

 98.02 



4,125 

 99.05 



3,411 

 99.03 



3,381 

 98.90 



5,574 

 98.74 



20,848 





Per cent sound 



98.72 







Plat III. 



Wormy 



Sound 



51 

 6,283 



18 

 4,479 



40 

 4,494 



25 



4,618 



14 



4,442 



148 

 24,316 





Total 



6,334 

 99.19 



4,497 

 99.59 



4,534 

 99.12 



4,643 

 99.46 



4,456 

 99.68 



24,464 



99.39 







Plat IV. 



Wormy 



Sound 



5,308 

 2,871 



2,671 

 2,349 



3,813 



2,873 



3,486 

 2,765 



3,336 

 1,958 



18,614 

 12,816 





Total 



Per cent sound 



8,179 

 35.12 



5,020 

 46.79 



6,686 

 42.97 



6, 251 

 44.23 



5,294 

 37.03 



31,430 



40.77 







It will be seen that Plat I, which received a total of three applica- 

 tions of an arsenate of lead spray, gave 95.13 per cent sound fruit. 

 Plat II, with four applications, yielded a somewhat higher quantity 

 of sound fruit, namely, 98.72 per cent; while from Plat III, which 

 received five spray applications, 99.39 per cent of the fruit for the 

 season was sound. Plat IV, which was not spra}*ed during the 

 season, shows only 40.77 per cent of the fruit free from codling moth 

 injury. In determining these results, examinations were made as 

 to worminess of all the apples produced on the five count trees 

 Ithroughout the season; that is, the fruit which fell, the fruit which 

 was picked from the trees in thinning, and that picked at harvest time. 



